<template>
  <div id="app1">
    <router-view/>
  </div>
</template>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /*text-align: center;*/
  color: #2c3e50;
}

nav {
  padding: 30px;
}

nav a {
  font-weight: bold;
  color: #2c3e50;
}

nav a.router-link-exact-active {
  color: #42b983;
}
</style>

<script>

export default {
    components: {},
    computed: {},
    watch: {},
    beforeCreate() {
    },

    //解决刷新页面丢失vuex数据
    created() {
        //在页面加载时读取sessionStorage里的状态信息
        if (sessionStorage.getItem('store')) {
            this.$store.replaceState(Object.assign({}, this.$store.state, JSON.parse(sessionStorage.getItem('store'))));
        }

        //在页面刷新时将vuex里的信息保存到sessionStorage里
        window.addEventListener('beforeunload', () => {
            sessionStorage.setItem('store', JSON.stringify(this.$store.state));
        });
    },


    beforeMount() {

    },

    mounted() {
    },

    beforeUpdate() {

    },

    updated() {

    },

    beforeDestroy() {

    },
    destroyed() {

    },

    activated() {

    },
}


</script>